TMJ, Neck & Trunk, Respiratory System Flashcards
Tmj has these joint motions:
Depression Elevation Lateral deviation Protrusion Returns ion
TMJ: articulation btwn -— & —- with a —- btwn these two bones
Mandibular fossa of t bone and condyle of mandible w a disc btwn these two bones
Tmj depression - what are the two movements?
- Anterior rotation of mandibular condyle on disc
2. Disc and condyle slide fwd and downward under the articular tubercle
What happens in TMJ during lateral deviation?
- One condyle rotates (spins) towards
* The other glides (away)
Muscles of mastication:
- Temporalis
- Masseter
- Medial pterygoid
- Lateral pterygoid - only one which opens
Muscles of mastication are innervated by:
Trigeminal nerve (CN V)
Main motion of Atlanto-occipital joint
Flexion and extension of head only
Atlantoaxial Joint motion
Rotation of the head only
Median atlantoaxial joint is:
Articulation btwn dens and anterior arch of atlas anteriorly and transverse ligament posteriorly
Cervical Retraction
Flex head on C1 and extend neck (finger on chin)
Cervical Protraction
Extend head on C1 and flex neck
vertebral artery passes through these which are only located here:
transverse foramen; cervical vertebrae
ROM for cervical: flexon extension lateral bending rotation
FEL = 45
Rotation=60
SCM
Flexes neck Extends head Rotates to opposite side Accessory nerve (CN XI) NR: CN XI, C2, C3
Brachial plexus and subclavian artery pass btwn this set of muscles
Scalenes
Scalenes
O - transverse process of cervical vertebrae
I - 1st and 2nd ribs
A - B: assist in neck flexion U: neck lateral bending
N - lower cervical nerves
Contributes to thoracic outlet syndrome
Scalene
Prevertebral Muscles
Anterior
Flexex head